The Dranetz 626A Universal Disturbance Analyzer is a microprocessor-based universal-type mainframe unit capable of holding up to 5 plug-in modules, each with its own software. The 626A mainframe provides all system functions, including power and real-time clock, for its plug-ins. The Dranetz 626A has a membrane keyboard. The 626A uses any of the 626 series plug-in modules. It can be used for measuring, monitoring, recording, and printing disturbances in AC power, DC power, temperature, and humidity, radio frequency, etc. Details for specific measurements can be found in the information on the various plug-in modules.